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drm/radeon: update line buffer allocation for dce4.1/5
[karo-tx-linux.git] / drivers / gpu / drm / radeon / trinity_smc.c
1 /*
2  * Copyright 2012 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23
24 #include "drmP.h"
25 #include "radeon.h"
26 #include "trinityd.h"
27 #include "trinity_dpm.h"
28 #include "ppsmc.h"
29
30 struct trinity_ps *trinity_get_ps(struct radeon_ps *rps);
31 struct trinity_power_info *trinity_get_pi(struct radeon_device *rdev);
32
33 static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
34 {
35         int i;
36         u32 v = 0;
37
38         WREG32(SMC_MESSAGE_0, id);
39         for (i = 0; i < rdev->usec_timeout; i++) {
40                 if (RREG32(SMC_RESP_0) != 0)
41                         break;
42                 udelay(1);
43         }
44         v = RREG32(SMC_RESP_0);
45
46         if (v != 1) {
47                 if (v == 0xFF) {
48                         DRM_ERROR("SMC failed to handle the message!\n");
49                         return -EINVAL;
50                 } else if (v == 0xFE) {
51                         DRM_ERROR("Unknown SMC message!\n");
52                         return -EINVAL;
53                 }
54         }
55
56         return 0;
57 }
58
59 int trinity_dpm_config(struct radeon_device *rdev, bool enable)
60 {
61         if (enable)
62                 WREG32_SMC(SMU_SCRATCH0, 1);
63         else
64                 WREG32_SMC(SMU_SCRATCH0, 0);
65
66         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
67 }
68
69 int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
70 {
71         WREG32_SMC(SMU_SCRATCH0, n);
72
73         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
74 }
75
76 int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
77 {
78         WREG32_SMC(SMU_SCRATCH0, n);
79
80         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
81 }
82
83 int trinity_uvd_dpm_config(struct radeon_device *rdev)
84 {
85         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
86 }
87
88 int trinity_dpm_no_forced_level(struct radeon_device *rdev)
89 {
90         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
91 }
92
93 int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
94                                           bool enable)
95 {
96         if (enable)
97                 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
98         else
99                 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
100 }
101
102 int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
103 {
104         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
105 }
106
107 void trinity_acquire_mutex(struct radeon_device *rdev)
108 {
109         int i;
110
111         WREG32(SMC_INT_REQ, 1);
112         for (i = 0; i < rdev->usec_timeout; i++) {
113                 if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
114                         break;
115                 udelay(1);
116         }
117 }
118
119 void trinity_release_mutex(struct radeon_device *rdev)
120 {
121         WREG32(SMC_INT_REQ, 0);
122 }